How to take out the number n from the square root without using mathematical functions?

Question

Java

Good afternoon!
We were given a task at the institute on the subject (Algorithm and data structure).
Write an algorithm that will calculate a number from a square root without using Math. functions.
I looked on the Internet, they always use (sqrt).
Thanks for any help

Answer 1

The most banal thing that comes to mind is to sequentially loop through the numbers from one to n. Multiply each number by itself until you get the given number.